/Engine/Source/Editor/Kismet/Public/BlueprintEditor.h
Delegate invoked when the selection is changed in the subobject editor widget
virtual void OnSelectionUpdated ( const [TArray](API\Runtime\Core\Containers\TArray)< [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< class [FSCSEditorTreeNode](API\Editor\Kismet\FSCSEditorTreeNode) >> & SelectedNodes )